if、whether引导的宾语从句

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1、if/whether引导的宾语从句一、由if或whether引导的宾语从句。if/whether“是否”，说明对陈述的事物不明确或不清楚。常用在ask,wonder,can(could)youtellme等后，二者通常可以互换。例如：Lilyaskedif/whethershelikedit.莉莉问她是否喜欢它。Iwanttoknowif(whether)helivesthere.我想知道他是否住在这儿。Heaskedmewhether(if)Icouldhelphim.他问我是否可以帮助他。小试牛刀：1、Mr.

2、Dingasked.Couldhecomeatseven?2、Shewantedtoknow.Didyouhaveagoodtime?二、只能用whether不能用if的情况　（1）在介词后面：例如：I’mthinkingofwhetherweshouldgofishing.Weareworriedaboutwhetheritwillraintomorrow.（2）在动词不定式前(whethertodosth.)：例如：Theyaskedmewhethertogoskating.（3）当与ornot连用，或提出两

3、种选择时:例如：Idon’tknowwhetherhe’sfreeornot.MaryaskedwhetherIwasdoingmyhomeworkornot.（4）宾语从句提前时：例如：Whetherthisistrueornot,Ican’tsay.小试牛刀：请用if、whether填空1.Iaskedher___________shehadabike.2.We’reworriedabout___________heissafe.3.Iwonder___________heiswell.4.Idon’tkno

4、w___________ornotheiswell.5.Idon’tknow___________togo.三、宾语从句的语序：引导词+主语+谓语+其他成分例如：Ithinkthatwecanbegoodfriends.Ican’trememberifIpostedtheletter.Mayweaskwhatyouaredoing?四、特殊的宾语从句———间接引语3当直接引语是一般疑问句，改为间接引语时，连接代词用if或whether，而引述选择疑问句时用whether，引述动词用ask，没有间接宾语的可以加一个

5、间接宾语me,him等。例如：ShesaidtoTom,“Canyouhelpme?”→SheaskedTomif/whetherhecouldhelpher.Sheasked,“Isthisbookyoursorhis?”→Sheaskedmewhetherthatbookwasmineorhis.小试牛刀：1、Theteacherasked,“Areyouwaitingforthebus?”→Theteacherasked.2、Heasked,“AreyouaPartymemberoraLeaguemembe

6、r?”→Heasked.3、Hesaid,“Didyouseemelastnight?”→______________________________________.练习一、单选题。1. Theyoungmanasked_____it'ssummerorwinter.A.eitherB.thatC.weatherD.whether2.Idon'tknow_________hewillcometomorrow._________hecomes,I'lltellyou．A.if;WhetherB.whether;W

7、hetherC.if;ThatD.if;If3.Theteacherasksus____Jimcancomebackontime.A.thatB.ifC.whenD.whattime4.Doesanybodyknow______wewillhaveasportsmeetingthisweekendornot.A.ifB.whereC.whetherD.that5.Hesaysthatifit_______tomorrow,he_____fishing.A.willrain,won'tgoB.rained,wasn

8、'tgoC.rains,won'tgoD.rain,willgo二、按要求填空。1、Iwanttoknow______________________________________.(他是否要和我们一起去Party)2、Askhim______________________________________.(他是否能来)3、Couldyoutellme________